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Rockbox mail archiveSubject: Iriver "bleeding" mp2 48kHz buffering problemsIriver "bleeding" mp2 48kHz buffering problems
From: Martin Borus <mborus_at_gmail.com>
Date: Sun, 26 Jun 2005 22:36:16 +0200 Hi, I have some severe buffering problems with 48 kHz mp2 direct rips from satellite. Strangely, I know that I had one bleeding build that played the file in full in the correct speed. That was the first one that had resampling I tested. But since then all the dailies I tested failed on the second file. All tests sone on a H140 Iriver. First the good news: 1. Example: AFN Radio, mp2 48kHz, 128k, 4 hours length Buffering starts at aprox 2:00 into the song. Buffers for 80 seconds and than doesn't buffer at least until 7:30 and I can forward to 30:00 minutes into the file without any new HD access. 2. Example: MTV TV sound, mp2 48 kHz, 192k, 2 hours length Buffering starts at aprox 1:37 into the song. Each pause is a short interruption, mostly followed by a HD spinup. Using bleeding edge from saturday: 1:47 pause 2:37 pause 2:57 pause 3:29 pause 3:59 pause 4:11 pause and so on (stopped testing) Daily build 23-06: 1:37 pause 1:51 pause 2:25 pause 2:39 pause 2:53 pause 3:10 pause 3:26 pause 3:40 pause 3:55 pause 4:03 pause 4:09 pause 4:18 pause 4:32 pause 4:49 pause 5:01 pause 5:16 pause 5:57 pause 6:27 pause no more pauses - I can forward until 18:00 with no HD access! Bleeding edge: Sunday, 10 pm 0:08 pause 0:15 pause 0:22 pause 0:31 pause 0:39 pause 0:45 pause 0:53 pause 1:01 pause 1:07 pause 1:16 pause 1:23 pause 1:29 pause 1:30 pause 1:37 pause 1:45 pause 1:52 pause 1:53 pause 2:02 pause 2:11 pause 2:17 pause 2:26 pause 2:32 pause 2:40 pause 2:45 pause 2:52 pause 3:02 pause 3:08 pause 3:15 pause 3:16 pause 3:26 pause 3:33 pause 3:40 pause 3:46 pause 3:52 pause 3:57 pause 4:00 pause 4:08 pause 4:14 pause 4:21 pause 4:29 pause 4:33 pause 4:39 pause 4:41 pause 4:47 pause 4:47 pause and so on.... I'm stopping here, the unit get's hot! Before each pause, The time display goes 0:00 and the HD spins up. I also tried a 3. example: BBC TV sound, mp2 48 kHz, 256k, 3 hours length Pause each 6 seconds. So it seems that the 48kHz-44Khz downsampling and the buffering are fighting a battle and that buffering looses... Martin _______________________________________________ http://cool.haxx.se/mailman/listinfo/rockbox Received on 2005-06-26 Page template was last modified "Tue Sep 7 00:00:02 2021" The Rockbox Crew -- Privacy Policy |